{"id":24331,"date":"2026-10-30T04:02:41","date_gmt":"2026-10-30T04:02:41","guid":{"rendered":"https:\/\/lead-pcb.com\/?p=24331"},"modified":"2026-10-30T04:02:41","modified_gmt":"2026-10-30T04:02:41","slug":"standard-pcb-thickness","status":"publish","type":"post","link":"https:\/\/lead-pcb.com\/fr\/blog\/standard-pcb-thickness\/","title":{"rendered":"\u00c9paisseur standard des circuits imprim\u00e9s : dimensions, tol\u00e9rances et compatibilit\u00e9 des connecteurs"},"content":{"rendered":"<p class=\"wp-block-paragraph\">L\u2019\u00e9paisseur standard de nombreux circuits imprim\u00e9s rigides \u00e0 usage g\u00e9n\u00e9ral est de <strong>1,6 mm d\u2019\u00e9paisseur nominale apr\u00e8s finition<\/strong>, soit environ <strong>0,063 pouce ou 63 mils<\/strong>. <a href=\"https:\/\/jlcpcb.com\/blog\/standard-pcb-thickness\">Le guide des \u00e9paisseurs standard de circuits imprim\u00e9s de JLCPCB&#8217;s<\/a>, mis \u00e0 jour le 9 septembre 2026, indique que 1,6 mm est une \u00e9paisseur standard courante. D\u2019autres dimensions sont \u00e9galement utilis\u00e9es, comme l\u2019explique <a href=\"https:\/\/resources.altium.com\/p\/standard-board-thickness-and-your-layer-stack\">le guide d\u2019Altium&#8217;s sur l\u2019\u00e9paisseur des cartes et l\u2019empilement des couches<\/a>. Une valeur nominale est une cible, et non une mesure ni une plage d\u2019acceptation. Avant d\u2019en choisir une, v\u00e9rifiez que la tol\u00e9rance de la carte finie est compatible avec les exigences r\u00e9elles du connecteur, du bo\u00eetier et de l\u2019empilement des couches.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Points cl\u00e9s<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Une \u00e9paisseur nominale de 1,6 mm est un point de d\u00e9part courant pour les circuits imprim\u00e9s rigides. La conception et l\u2019accord de fabrication d\u00e9terminent la dimension \u00e0 appliquer \u00e0 une carte donn\u00e9e.<\/li>\n\n\n\n<li>L\u2019\u00e9paisseur nominale et la tol\u00e9rance d\u00e9finissent une plage. Pour v\u00e9rifier la compatibilit\u00e9 avec le connecteur, il faut contr\u00f4ler cette plage au niveau des surfaces de mesure indiqu\u00e9es sur le dessin du connecteur.<\/li>\n\n\n\n<li>L\u2019\u00e9paisseur totale de la carte, l\u2019\u00e9paisseur du cuivre et l\u2019espacement di\u00e9lectrique entre les couches s\u00e9lectionn\u00e9es sont des dimensions diff\u00e9rentes.<\/li>\n\n\n\n<li>Indiquez l\u2019emplacement de mesure, les surfaces finies, la tol\u00e9rance et la m\u00e9thode d\u2019inspection, puis obtenez l\u2019approbation de fabrication et d\u2019ing\u00e9nierie avant la mise en production.<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Quelle est l\u2019\u00e9paisseur standard d\u2019un circuit imprim\u00e9 ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Une \u00e9paisseur courante pour une carte de circuit imprim\u00e9 est de <strong>1,6 mm nominal<\/strong>, mais il s\u2019agit d\u2019une convention et non d\u2019une dimension obligatoire pour toutes les conceptions. Le plan de d\u00e9finition et les exigences de fabrication convenues d\u00e9finissent la valeur cible et les limites acceptables pour une carte donn\u00e9e.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les valeurs m\u00e9triques et imp\u00e9riales qui semblent similaires ne sont pas identiques :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>1,60 mm<\/strong> = 0,06299 pouce, soit environ 63 mils.<\/li>\n\n\n\n<li><strong>0,062 pouce<\/strong> = 1,5748 mm, soit environ 1,57 mm.<\/li>\n\n\n\n<li><strong>1\/16 pouce<\/strong> = 1,5875 mm.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ces valeurs peuvent \u00eatre arrondies et consid\u00e9r\u00e9es comme \u00e9quivalentes dans la conversation. Sur un plan, indiquez explicitement la dimension nominale voulue, les unit\u00e9s et la tol\u00e9rance. La diff\u00e9rence peut \u00eatre importante lorsqu\u2019un connecteur ou un bo\u00eetier pr\u00e9sente un jeu limit\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Tableau des \u00e9paisseurs de circuits imprim\u00e9s : dimensions courantes en mm et en mils<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les options d\u2019\u00e9paisseur nominale suivantes figurent sur la <a href=\"https:\/\/lead-pcb.com\/fr\/pcb-capabilities\/\">page des capacit\u00e9s de fabrication de circuits imprim\u00e9s<\/a>, consult\u00e9e le 29 octobre 2026. Les valeurs en pouces et en mils sont arrondies ; un mil vaut 0,001 pouce.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u00c9paisseur nominale<\/th><th class=\"has-text-align-left\" data-align=\"left\">Pouces (approx.)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Mils (approx.)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Quand l\u2019envisager<\/th><\/tr><\/thead><tbody><tr><th class=\"has-text-align-left\" data-align=\"left\">0,4 mm<\/th><td class=\"has-text-align-left\" data-align=\"left\">0.0157<\/td><td class=\"has-text-align-left\" data-align=\"left\">15.75<\/td><td class=\"has-text-align-left\" data-align=\"left\">Agencements \u00e0 profil bas ; v\u00e9rifier la manipulation.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">0,6 mm<\/th><td class=\"has-text-align-left\" data-align=\"left\">0.0236<\/td><td class=\"has-text-align-left\" data-align=\"left\">23.62<\/td><td class=\"has-text-align-left\" data-align=\"left\">Constructions rigides minces ; v\u00e9rifier le soutien.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">0,8 mm<\/th><td class=\"has-text-align-left\" data-align=\"left\">0.0315<\/td><td class=\"has-text-align-left\" data-align=\"left\">31.50<\/td><td class=\"has-text-align-left\" data-align=\"left\">Bo\u00eetiers peu profonds ; v\u00e9rifier la d\u00e9flexion.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">1,0 mm<\/th><td class=\"has-text-align-left\" data-align=\"left\">0.0394<\/td><td class=\"has-text-align-left\" data-align=\"left\">39.37<\/td><td class=\"has-text-align-left\" data-align=\"left\">Jeu limit\u00e9 ; v\u00e9rifier l\u2019empilement des couches.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">1,2 mm<\/th><td class=\"has-text-align-left\" data-align=\"left\">0.0472<\/td><td class=\"has-text-align-left\" data-align=\"left\">47.24<\/td><td class=\"has-text-align-left\" data-align=\"left\">Lorsque l\u2019interface m\u00e9canique l\u2019exige.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">1,6 mm<\/th><td class=\"has-text-align-left\" data-align=\"left\">0.0630<\/td><td class=\"has-text-align-left\" data-align=\"left\">62.99<\/td><td class=\"has-text-align-left\" data-align=\"left\">Point de d\u00e9part courant ; v\u00e9rifier la compatibilit\u00e9.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">2,0 mm<\/th><td class=\"has-text-align-left\" data-align=\"left\">0.0787<\/td><td class=\"has-text-align-left\" data-align=\"left\">78.74<\/td><td class=\"has-text-align-left\" data-align=\"left\">Lorsque davantage de rigidit\u00e9 est n\u00e9cessaire ; v\u00e9rifier le per\u00e7age.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">2,4 mm<\/th><td class=\"has-text-align-left\" data-align=\"left\">0.0945<\/td><td class=\"has-text-align-left\" data-align=\"left\">94.49<\/td><td class=\"has-text-align-left\" data-align=\"left\">Constructions plus \u00e9paisses ; v\u00e9rifier les rainures et la profondeur des vias.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">3,2 mm<\/th><td class=\"has-text-align-left\" data-align=\"left\">0.1260<\/td><td class=\"has-text-align-left\" data-align=\"left\">125.98<\/td><td class=\"has-text-align-left\" data-align=\"left\">Constructions plus \u00e9paisses ; v\u00e9rifier le per\u00e7age et la fabrication.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Il s\u2019agit de valeurs nominales, et non de plages d\u2019acceptation. La pr\u00e9sence d\u2019une dimension dans la liste ne garantit pas qu\u2019elle soit disponible pour tous les mat\u00e9riaux, poids de cuivre ou nombres de couches. Confirmez les options actuelles et la construction propos\u00e9e aupr\u00e8s du fabricant.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"765\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/common-pcb-thickness-1024x765.webp\" alt=\"Side cross-section comparison of various rigid PCB thickness sizes arranged progressively from thin to thick\" class=\"wp-image-24334\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/common-pcb-thickness-1024x765.webp 1024w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/common-pcb-thickness-300x224.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/common-pcb-thickness-768x573.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/common-pcb-thickness-16x12.webp 16w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/common-pcb-thickness.webp 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What Does Finished PCB Thickness Include?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Finished PCB thickness describes a dimension across the completed board, but the surfaces and measurement location must be defined. A connector may control a different local dimension from the general board thickness on a fabrication drawing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Board thickness, copper thickness and dielectric spacing<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Dimension<\/th><th class=\"has-text-align-left\" data-align=\"left\">Ce qu'il d\u00e9crit<\/th><th class=\"has-text-align-left\" data-align=\"left\">Pourquoi c'est important<\/th><\/tr><\/thead><tbody><tr><th class=\"has-text-align-left\" data-align=\"left\">L'\u00e9paisseur finale de la carte<\/th><td class=\"has-text-align-left\" data-align=\"left\">The complete board between specified surfaces<\/td><td class=\"has-text-align-left\" data-align=\"left\">Connector and enclosure fit<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">\u00c9paisseur du cuivre<\/th><td class=\"has-text-align-left\" data-align=\"left\">A specified conductive layer<\/td><td class=\"has-text-align-left\" data-align=\"left\">Conductor geometry and fabrication<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">Dielectric spacing<\/th><td class=\"has-text-align-left\" data-align=\"left\">Insulation between particular copper layers<\/td><td class=\"has-text-align-left\" data-align=\"left\">Stackup and impedance calculations<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Copper weight is a separate specification from total board thickness. <a href=\"https:\/\/pcbprime.com\/pcb-tips\/how-thick-is-1oz-copper\/\">PCB Prime&#8217;s copper conversion reference<\/a> puts 1 oz of copper per square foot at approximately <strong>35 \u00b5m<\/strong>, or 0.035 mm, nominal thickness. Plating can add copper to outer layers, so finished copper can differ from the starting foil.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Where and how is thickness measured?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A rigid board&#8217;s construction can include cores, prepreg and copper layers. Plating, solder mask and surface finish can also affect a local measurement. Ask which surfaces the fabricator uses for its finished-thickness specification, whether mask and finish are included, and where and how it measures the board.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At a card edge, <strong>pad-to-pad thickness<\/strong> is the local distance between the specified finished connector pad surfaces on opposite sides of the board. A reading over solder mask elsewhere does not automatically describe that dimension.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"765\" src=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/card-edge-measurement-1024x765.webp\" alt=\"Conceptual technical cross-section diagram showing pad-to-pad thickness measured at the card edge between opposing finished contact pads.\" class=\"wp-image-24335\" srcset=\"https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/card-edge-measurement-1024x765.webp 1024w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/card-edge-measurement-300x224.webp 300w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/card-edge-measurement-768x573.webp 768w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/card-edge-measurement-16x12.webp 16w, https:\/\/lead-pcb.com\/wp-content\/uploads\/2026\/10\/card-edge-measurement.webp 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Conceptual cross-section, not to scale. The measurement runs between the finished pad surfaces at the mating edge.<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Choose PCB Thickness for Your Design<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Choose a nominal thickness only after checking the mechanical and fabrication constraints together. Use the actual product drawings and ask the fabricator to review the proposed construction.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Exigence<\/th><th class=\"has-text-align-left\" data-align=\"left\">Design question<\/th><th class=\"has-text-align-left\" data-align=\"left\">Confirmation requise<\/th><\/tr><\/thead><tbody><tr><th class=\"has-text-align-left\" data-align=\"left\">Connector or board slot<\/th><td class=\"has-text-align-left\" data-align=\"left\">What card thickness range and surfaces does the drawing specify?<\/td><td class=\"has-text-align-left\" data-align=\"left\">Compare both finished limits at the stated location.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">Enclosure and mounting<\/th><td class=\"has-text-align-left\" data-align=\"left\">Does the board clear the housing, standoffs and fasteners?<\/td><td class=\"has-text-align-left\" data-align=\"left\">Check the allowed range and assembly clearances.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">Support and handling<\/th><td class=\"has-text-align-left\" data-align=\"left\">Can the board span its supports and withstand assembly loads?<\/td><td class=\"has-text-align-left\" data-align=\"left\">Review deflection and the handling process.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">Layer stack<\/th><td class=\"has-text-align-left\" data-align=\"left\">Can the selected layers and dielectric spacings meet the target?<\/td><td class=\"has-text-align-left\" data-align=\"left\">Approve the stackup and any impedance requirements.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">Vias and drilling<\/th><td class=\"has-text-align-left\" data-align=\"left\">Does board thickness change the hole depth-to-diameter ratio?<\/td><td class=\"has-text-align-left\" data-align=\"left\">Confirm drill and plating feasibility.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">Materials and supply<\/th><td class=\"has-text-align-left\" data-align=\"left\">Are the materials and construction available at the target thickness?<\/td><td class=\"has-text-align-left\" data-align=\"left\">Confirm options, cost and lead time for the build.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">For otherwise comparable boards, increasing thickness generally increases stiffness. Board dimensions, support span, material, layup and loads also affect deflection. A thin rigid board is not automatically a flex circuit; it should not be treated as one simply because it bends.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Layer count does not uniquely determine finished thickness. A different total thickness may require a stackup revision, but it does not by itself determine an impedance change. Impedance depends on the relevant trace geometry, dielectric spacing and materials. Review the proposed construction with the fabricator and use the <a href=\"https:\/\/lead-pcb.com\/fr\/blog\/controlled-impedance-pcb-guide\/\">guide de conception PCB \u00e0 imp\u00e9dance contr\u00f4l\u00e9e<\/a> for the electrical specification. For material selection, see <a href=\"https:\/\/lead-pcb.com\/fr\/blog\/fr4-pcb-guide\/\">FR-4 PCB materials and design<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Worked Example: Will a 1.6 mm Board Fit a Card-Edge Connector?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A PCB thickness tolerance must be compared with the connector&#8217;s full permitted card range at the same surfaces. The following educational example combines a real connector drawing with a separate supplier&#8217;s published board tolerance. It is not a measured customer design or a qualification result.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Read the connector drawing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">La <a href=\"https:\/\/suddendocs.samtec.com\/prints\/htec8-1xxx-xx-x-dv-xx-x-xx-mkt.pdf\">Dessin Samtec HTEC8, r\u00e9vision N<\/a>, consult\u00e9 le 29 octobre 2026, indique l\u2019option d\u2019\u00e9paisseur de carte <strong>-01<\/strong> une carte d\u2019accouplement nominale de 1,57 mm avec une tol\u00e9rance <strong>\u00b10,157 mm entre pastilles<\/strong> . Ses limites calcul\u00e9es sont les suivantes :<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1,57 &#8211; 0,157 = 1,413 mm minimum ; 1,57 + 0,157 = 1,727 mm maximum.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le dessin de la s\u00e9rie inclut \u00e9galement une autre option d\u2019\u00e9paisseur de carte. V\u00e9rifiez la r\u00e9f\u00e9rence exacte du connecteur, la r\u00e9vision actuelle du dessin, le chanfrein d\u2019entr\u00e9e et toutes les autres exigences d\u2019accouplement avant d\u2019utiliser ces valeurs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Comparer toute la plage de la carte<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0 titre d\u2019exemple distinct, <a href=\"https:\/\/jlcpcb.com\/capabilities\/pcb-capabilities\/\">la page des capacit\u00e9s de JLCPCB&#8217;s<\/a>, consult\u00e9e le 29 octobre 2026, indique une tol\u00e9rance d\u2019\u00e9paisseur de \u00b110 % pour les cartes d\u2019au moins 1,0 mm d\u2019\u00e9paisseur. En appliquant cette tol\u00e9rance indicative \u00e0 une carte de <strong>1,60 mm nominal<\/strong> , on obtient :<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1,60 \u00d7 0,90 = 1,44 mm minimum ; 1,60 \u00d7 1,10 = 1,76 mm maximum.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si cette tol\u00e9rance de carte s\u2019appliquait aux m\u00eames surfaces entre pastilles au niveau du bord d\u2019accouplement, sa limite sup\u00e9rieure de 1,76 mm d\u00e9passerait la limite sup\u00e9rieure du connecteur de 1,727 mm de <strong>0,033 mm<\/strong>. Sa limite inf\u00e9rieure de 1,44 mm serait sup\u00e9rieure de 0,027 mm \u00e0 la limite minimale du connecteur. Dans ces conditions, la tol\u00e9rance de la carte \u00e0 elle seule ne garantirait pas que toute la plage admissible de la carte respecte la plage d\u2019\u00e9paisseur du connecteur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La page du fournisseur ne pr\u00e9cise pas si sa tol\u00e9rance d\u2019\u00e9paisseur s\u2019applique \u00e0 ces surfaces entre pastilles. Obtenez la d\u00e9finition de la mesure avant de comparer les exigences physiques. Ni les valeurs publi\u00e9es ni ce calcul ne prouvent qu\u2019une carte fabriqu\u00e9e donn\u00e9e est conforme ou non conforme.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Consigner une sp\u00e9cification \u00e9ventuelle et les questions en suspens<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Une demande hypoth\u00e9tique serait de <strong>1,57 mm \u00b10,10 mm entre pastilles au niveau du bord d\u2019accouplement<\/strong>, soit une plage de <strong>1,47 \u00e0 1,67 mm<\/strong>. Sur les m\u00eames surfaces d\u00e9finies, cette plage demand\u00e9e se situe \u00e0 l\u2019int\u00e9rieur de la plage indiqu\u00e9e pour le connecteur, avec une marge de 0,057 mm \u00e0 chaque limite.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Exigence<\/th><th class=\"has-text-align-left\" data-align=\"left\">Exemple de plage<\/th><th class=\"has-text-align-left\" data-align=\"left\">Statut<\/th><\/tr><\/thead><tbody><tr><th class=\"has-text-align-left\" data-align=\"left\">Carte d\u2019accouplement HTEC8 -01<\/th><td class=\"has-text-align-left\" data-align=\"left\">1,413 \u00e0 1,727 mm entre pastilles<\/td><td class=\"has-text-align-left\" data-align=\"left\">Dessin de connecteur publi\u00e9 ; v\u00e9rifier la r\u00e9vision et les autres exigences.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">Carte indicative de 1,60 mm \u00e0 \u00b110 %<\/th><td class=\"has-text-align-left\" data-align=\"left\">1,44 \u00e0 1,76 mm<\/td><td class=\"has-text-align-left\" data-align=\"left\">Exemple de tol\u00e9rance publi\u00e9e ; \u00e9quivalence avec la mesure entre pastilles non confirm\u00e9e.<\/td><\/tr><tr><th class=\"has-text-align-left\" data-align=\"left\">Carte propos\u00e9e de 1,57 mm \u00e0 \u00b10,10 mm<\/th><td class=\"has-text-align-left\" data-align=\"left\">1,47 \u00e0 1,67 mm entre pastilles<\/td><td class=\"has-text-align-left\" data-align=\"left\">Demande hypoth\u00e9tique ; approbation de la fabrication et de l\u2019inspection en attente.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">La tol\u00e9rance propos\u00e9e ne correspond pas \u00e0 une capacit\u00e9 publi\u00e9e du fabricant. Confirmez qu\u2019elle peut \u00eatre fabriqu\u00e9e et contr\u00f4l\u00e9e, convenez de la prise en compte de la finition et de l\u2019incertitude de mesure, puis obtenez l\u2019approbation du concepteur et du fabricant. Le fait que les plages soient incluses l\u2019une dans l\u2019autre ne suffit pas \u00e0 \u00e9tablir la compatibilit\u00e9 compl\u00e8te du connecteur.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sp\u00e9cifier l\u2019\u00e9paisseur du PCB sur le plan de fabrication<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le plan de fabrication doit pr\u00e9ciser \u00e0 la fois l\u2019\u00e9paisseur requise du PCB fini et la m\u00e9thode de v\u00e9rification. Indiquez la cote nominale et les unit\u00e9s, la tol\u00e9rance ou les limites explicites, la zone et les surfaces de mesure, la finition et les rev\u00eatements requis, ainsi que la m\u00e9thode de contr\u00f4le applicable. Lorsque le bord d\u2019accouplement est concern\u00e9, indiquez la r\u00e9f\u00e9rence et la r\u00e9vision du connecteur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour l\u2019exemple hypoth\u00e9tique ci-dessus, une note possible serait :<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Au niveau du bord d\u2019accouplement du connecteur, demander 1,57 mm \u00b10,10 mm, mesur\u00e9s entre pastilles sur les surfaces de contact finies. Les emplacements et la m\u00e9thode de mesure, ainsi que le traitement de l\u2019incertitude, sont \u00e0 convenir et \u00e0 faire approuver par l\u2019ing\u00e9nierie.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">N\u2019utilisez cette note qu\u2019apr\u00e8s les revues du connecteur et de la fabrication. Si n\u00e9cessaire, sp\u00e9cifiez s\u00e9par\u00e9ment l\u2019\u00e9paisseur g\u00e9n\u00e9rale de la carte, avec ses propres surfaces et sa tol\u00e9rance ; ne supposez pas qu\u2019elle est identique \u00e0 la cote locale entre pastilles. Consignez le mat\u00e9riau, le cuivre et l\u2019empilage approuv\u00e9, et exigez l\u2019approbation de toute modification ayant une incidence sur la sp\u00e9cification. V\u00e9rifiez la coh\u00e9rence du plan, de l\u2019empilage et des exigences du connecteur dans les documents contr\u00f4l\u00e9s. Le <a href=\"https:\/\/lead-pcb.com\/fr\/blog\/pcb-dfm-checklist\/\">liste de contr\u00f4le DFM PCB<\/a> couvre le dossier de publication plus g\u00e9n\u00e9ral.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lorsque le projet fait r\u00e9f\u00e9rence \u00e0 des documents IPC, v\u00e9rifiez les r\u00e9visions et les clauses applicables. IPC-2221 traite de la conception g\u00e9n\u00e9rique des circuits imprim\u00e9s, IPC-2222 de la conception des cartes rigides organiques et IPC-6012 de la qualification et des performances des cartes rigides. <a href=\"https:\/\/www.electronics.org\/ipc-document-revision-table\">Le tableau des r\u00e9visions des documents IPC&#8217;s<\/a> aide \u00e0 identifier les r\u00e9visions ; le num\u00e9ro d\u2019un document, \u00e0 lui seul, ne pr\u00e9cise pas la tol\u00e9rance applicable \u00e0 votre carte.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Erreurs courantes concernant l\u2019\u00e9paisseur des PCB<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Consid\u00e9rer la valeur nominale comme une compatibilit\u00e9 exacte.<\/strong> Comparez les limites minimale et maximale convenues avec celles de la pi\u00e8ce d\u2019accouplement.<\/li>\n\n\n\n<li><strong>Utiliser 0,062 pouce et 1,60 mm comme des valeurs identiques sur le plan.<\/strong> Preserve the actual dimension and units through the release package.<\/li>\n\n\n\n<li><strong>Confusing copper weight with board thickness.<\/strong> Specify each copper layer separately from the finished board dimension.<\/li>\n\n\n\n<li><strong>Comparing different surfaces.<\/strong> Establish whether both requirements refer to finished pads, solder mask or another defined surface.<\/li>\n\n\n\n<li><strong>Assigning one thickness to each layer count.<\/strong> Ask for a buildable stackup that meets the target and tolerance.<\/li>\n\n\n\n<li><strong>Changing the stackup without a review.<\/strong> Recheck mechanical fit and any controlled impedance requirements before approving the change.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">PCB Thickness FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">How thick is an FR-4 PCB?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A common FR-4 PCB thickness is 1.6 mm nominal, but FR-4 boards can use other dimensions. Select one for the mechanical interfaces and layer construction, then agree the finished thickness and tolerance with the fabricator.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Is 1.6 mm the same as 0.062 inch?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. They are close, but 0.062 inch equals 1.5748 mm. Use the exact nominal dimension and tolerance on the drawing when checking fit or placing an order.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What is the tolerance for a 1.6 mm PCB?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">It depends on the fabrication agreement and how the dimension is measured. The \u00b110% example above comes from a cited supplier&#8217;s published conditions; it is not a universal tolerance or a guarantee for another fabricator.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How thick is 1 oz of copper?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">One ounce of copper per square foot corresponds to approximately 35 \u00b5m nominal copper thickness. That describes copper, not the entire PCB. Finished outer-layer copper can differ from the starting foil after plating.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Plan Your Fabrication Review<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Choose a thickness whose agreed range meets the mechanical requirements, then confirm the stackup and measurement surfaces. For a project-specific review, share your board files, required finished thickness, connector drawing and proposed stackup through <a href=\"https:\/\/lead-pcb.com\/fr\/pcb-manufacturing\/rigid-pcb\/\">rigid PCB manufacturing<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>The standard PCB thickness for many general-purpose rigid boards is 1.6 mm nominal finished thickness, approximately 0.063 inch or 63 mil. JLCPCB&#8217;s standard PCB thickness guide, updated September 9, 2026, describes 1.6 mm as a common standard thickness. Other dimensions are used too, as described in Altium&#8217;s board thickness and stackup guide. A nominal value [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":24333,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"Standard PCB Thickness: Sizes, Tolerances and Connector Fit","_seopress_titles_desc":"Learn standard PCB thickness, compare common sizes, and check tolerance, connectors and stackup before fabrication. Plan your next board.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"footnotes":""},"categories":[16],"tags":[],"class_list":["post-24331","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pcb-fabrication"],"acf":[],"meta_box":[],"_links":{"self":[{"href":"https:\/\/lead-pcb.com\/fr\/wp-json\/wp\/v2\/posts\/24331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lead-pcb.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lead-pcb.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/fr\/wp-json\/wp\/v2\/comments?post=24331"}],"version-history":[{"count":0,"href":"https:\/\/lead-pcb.com\/fr\/wp-json\/wp\/v2\/posts\/24331\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lead-pcb.com\/fr\/wp-json\/wp\/v2\/media\/24333"}],"wp:attachment":[{"href":"https:\/\/lead-pcb.com\/fr\/wp-json\/wp\/v2\/media?parent=24331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lead-pcb.com\/fr\/wp-json\/wp\/v2\/categories?post=24331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lead-pcb.com\/fr\/wp-json\/wp\/v2\/tags?post=24331"}],"curies":[{"name":"Je suis d\u00e9sol\u00e9, je n'ai pas encore appris \u00e0 traduire ce contenu.","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}